่่ขอโค๊ด javascript กรอกช่องแรก คำนวน vat7 และยอดรวม

var total;
var vat ;

vat = (parseInt(document.form1.text1.value)*7)/100;
total = parseInt(document.form1.text1.value)+vat;

document.form1.text2.value = vat;
document.form1.text3.value = total;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
	$(document).ready(function(e) {
        $('#Price').on('keyup',function(){
			$('#Vat').val('');
			$('#Net').val('');
			if($(this).val() != ''){
				$('#Vat').val($(this).val()*7/100);
				$('#Net').val($(this).val()+($(this).val()*7/100));
			}
		});
    });
</script>
<input type="number" id="Price" placeholder="Price" /></br>
<input type="number" id="Vat" placeholder="Vat" /></br>
<input type="number" id="Net" disabled="disabled" />

<script language="JavaScript">
	function fncSum()
	{
        var val1 = parseFloat(document.getElementById("tax_money").value) * 0.07 ;
		
		 document.form.tax_all_money.value = parseFloat(document.form.tax_money.value) * 0.07 ;

		 document.form.tax_money_vat.value = parseFloat(document.form.tax_money.value) +  val1;
	}
</script>